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1. CN104520643 - Method for removing iron components from heater drain water in power-generating plant

Office
China
Application Number 201280075201.7
Application Date 27.12.2012
Publication Number 104520643
Publication Date 15.04.2015
Publication Kind A
IPC
F22B 37/48
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
37Component parts or details of steam boilers
02applicable to more than one kind or type of steam boiler
48Devices or arrangements for removing water, minerals, or sludge from boilers
B01D 35/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
35Filtering devices having features not specifically covered by groups B01D24/-B01D33/, or for applications not specifically covered by groups B01D24/-B01D33/230; Auxiliary devices for filtration; Filter housing constructions
02Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
C02F 1/44
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
F22B 37/56
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
37Component parts or details of steam boilers
02applicable to more than one kind or type of steam boiler
56Boiler-cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
F22D 11/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
11Feed-water supply not provided for in other main groups
CPC
F22B 37/56
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
37Component parts or details of steam boilers
02applicable to more than one kind or type of steam boiler
56Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
C02F 1/001
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
001Processes for the treatment of water whereby the filtration technique is of importance
C02F 2101/203
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2101Nature of the contaminant
10Inorganic compounds
20Heavy metals or heavy metal compounds
203Iron or iron compound
F22B 37/48
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
37Component parts or details of steam boilers
02applicable to more than one kind or type of steam boiler
48Devices for removing water, salt, or sludge from boilers
Applicants MITSUBISHI HEAVY IND LTD
Inventors TSUBAKIZAKI SENICHI
TAKADA MASAHARU
MITATEDA HIROSHI
URATA NAOYA
Agents luo yunpo
Title
(EN) Method for removing iron components from heater drain water in power-generating plant
(ZH) 发电设备的加热器排出水中的铁成分的去除方法
Abstract
(EN) Provided is a method for removing iron components from heater drain water in a power-generating plant, whereby the iron concentration in supply water to be supplied to a boiler can be decreased to a reference value or lower. The heater drain water (117) is discharged to the outside of the system when the iron ion concentration in heater drain water (117) discharged from a heater drain tank (116) is higher than a predetermined value, and the heater drain water (117) is supplied to a filtration apparatus (15) when the iron ion concentration in the heater drain water (117) discharged from the heater drain tank (116) is equal to or lower than the predetermined value. Alternatively, the heater drain water (117) is discharged to the outside of the system when a predetermined period of time is not elapsed, and the heater drain water (117) is supplied to the filtration apparatus (15) when the predetermined period of time is elapsed.
(ZH)

本发明提供一种发电设备的加热器排出水中的铁成分的去除方法,该方法能够使向锅炉输送的供给水中的铁浓度降至基准值以下。在从加热器排水箱(116)排出的加热器排出水(117)中的铁离子浓度比规定值高的情况下,使所述加热器排出水(117)向系统外排出,在从所述加热器排水箱(116)排出的所述加热器排出水(117)中的铁离子浓度为规定值以下的情况下,使所述加热器排出水(117)向过滤装置(15)供给,或者,在没有经过预先设定的规定时间的情况下,使所述加热器排出水(117)向系统外排出,在经过了预先设定的规定时间的情况下,使所述加热器排出水(117)向所述过滤装置(15)供给。


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